Original Research

Haemonchus spp. in sheep farmed under resource-poor conditions in South Africa - effect on haematocrit, conjunctival mucous membrane colour and body condition

A.F. Vatta, R.C. Krecek, M.J. Van der Linde, P.W. Motswatswe, R.J. Grimbeek, E.F. Van Wijk, J.W. Hansen
Journal of the South African Veterinary Association | Vol 73, No 3 | a572 | DOI: https://doi.org/10.4102/jsava.v73i3.572 | © 2002 A.F. Vatta, R.C. Krecek, M.J. Van der Linde, P.W. Motswatswe, R.J. Grimbeek, E.F. Van Wijk, J.W. Hansen | This work is licensed under CC Attribution 4.0
Submitted: 06 July 2002 | Published: 06 July 2002

About the author(s)

A.F. Vatta,
R.C. Krecek,
M.J. Van der Linde,
P.W. Motswatswe,
R.J. Grimbeek,
E.F. Van Wijk,
J.W. Hansen,

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Abstract

A longitudinal study was conducted on the differential faecal egg counts, haematocrits and body condition scores of sheep belonging to resource-poor farmers at Rust de Winter, Gauteng province, and Kraaipan, North West Province, South Africa. The animals were scored for level of anaemia using the FAMACHA(c) method, an assay for the clinical evaluation of anaemia caused by Haemonchus spp. Periods of higher Haemonchus egg counts occurred from October to March for sheep at Rust de Winter and from September/October to February or April for sheep at Kraaipan. Lower haematocrit values were registered during these periods as was a higher incidence of anaemic conjunctival mucous membrane colour scores compared to the period April to September. No clear relationship between the faecal egg counts and the body condition scores was evident. Although wider application of the FAMACHA(c) system in sheep raised by resource-poor farmers should be investigated, the present study indicates that this method may certainly prove to be a valuable worm control strategy for such livestock owners.

Keywords

Body Condition; Conjunctival Mucous Membrane Colour; FAMACHA; Haematocrit; Haemonchus Spp; Sheep

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